function s1_hello(){
	echo "hello, world!"
}

function s2_tell_who_i_am(){
	echo "$(whoami)"
}

function s3_which_distro_do_i_use(){
	cat /etc/*-release | grep "^NAME"
}

function s4_view_my_cpu_arch(){
	uname -m
}

function s5_show_first_scsi_disk_size(){
	lsblk -l | \grep disk | \grep '^sda' | \awk '{print $4}' |tr -d 'G'
}

function s6_show_main_memory_size_in_megabytes(){
	free -m | grep "Mem:" | awk '{print $2}'
}


